*{
  font-family: 'Bilbo Swash Caps', cursive;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

section{
  position: relative;
  width: 100%;
  height: 100vh;
  background:url(bg.jpg), linear-gradient(45deg, #ff3479, #0319f4);
  background-blend-mode: soft-light;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  border-left: 50px solid #fff;
  border-right: 50px solid #fff;
}

section h2{
  color: #fff;
  font-size: 4em;
  text-align: center;
}
section:nth-child(2){
  background:url(bg.jpg), linear-gradient(45deg, #03a9f4, #62ff3b);
  background-blend-mode: soft-light;
  background-size: cover;
  background-position: center;
}
section:nth-child(3){
  background:url(bg.jpg), linear-gradient(45deg, #ff3479, #ffc107);
  background-blend-mode: soft-light;
  background-size: cover;
  background-position: center;
}
section::before{
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40px;
  display: block;
  background: linear-gradient(-45deg, transparent 33.33%, #fff 33.33%, #fff 66.666%, transparent 66.666%), 
  linear-gradient(45deg, transparent 33.33%, #fff 33.33%, #fff 66.666%, transparent 66.666%);
  background-size: 30px 60px;
}
section::after{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 40px;
  display: block;
  background: linear-gradient(-45deg, transparent 33.33%, #fff 33.33%, #fff 66.666%, transparent 66.666%), 
  linear-gradient(45deg, transparent 33.33%, #fff 33.33%, #fff 66.666%, transparent 66.666%);
  background-size: 30px 60px;
  transform: rotate(180deg);
}